Apparatus for cleaning plate-glass-grinding tables or cars



' March 19, 1929.` J. GREEN L 1,705g91`5 APPARATUS FOR CLEANING PLATE GLASS GRINDING TABLES OR CARS` Filea Nov. 5, 1927 2 Sheets-Sheet L INVENTOR March 19, 1929. J. Gril-:EN 1,705,915

APPARATUS F011 CLEANING PLATE GLASS GRINDING TABLES OR CARS Filed Nov. 3. 1927 2 Sheets-Sheet 2 v J w. m. M. man m mbv lateiated Mar; 19, 1929.

unirse stares PAT l Jeunes GREEN, on neiioxnivmnoi: HEIGHTS, rnnnsrnvauia,

` *s 1,705,915 Nr orifice.-l

ASSIGNOR TO :PITTS- BURGH PLATE GLASS CQMPANY, A CORPORATION OF PENNSYLVANIA.

APPARATUS" FOR CLEANING PLATE-GLASS-GENDNG TABLES OB CARS.

Application. led November 3, 1327. ySerial The invention relatos to a pp aratus foi" nient of the 'glass-4 on the table,

the invention constituting an improvement over an appa ratus for performing similar functions as disclosed in the Heichert and' Evans Patent No. 1,610,374; ent apparatus is designed to dated Dectle, 1926. Thepres- `perform the functions of'crushing the'plaster and push-v ing/the pegs with less expenditure vof power and with less 'wear and tear-upon the apparatus than is the case with the device shown 1 in saidpatent. Briefly stated, thedesired. result is accomplished in the luse of rollers y or wheels instead of the cani shoes 1li (Fig. of the patent, two rollers losing preferably employed, one having a wedge shaped face to fracture the plaster and pa tirely drive the pegs, andthe rtially or enother having a flat face to coinplete the crushing operasingle a. flat one,

specified are employed. @ne ci the invention is illustrated in th ing drawings, wherein: f

i tion. The result may be accomplished by a roller having either a wedge face or l butthe device Works niore easily and eli'ectively if the two rollers 4as above nbodiinent of e accoiiipany- Figure 1 is a plan view of the apparatus showing its location with respe of the surfacing table. Figf2 ct vto the Vedge is a side ele-Y rationr with a portion ofthe surfacing table in section. And Fig. Sis. al side elevation,

p'mtially in section of one of tliespriiig .adand the adjusting.devices ear.

jueting bolts ried thereby. p

Referring to the drawings, of a surfacing'truck or table fr l1-is the top oin which the glass has been removed and from which it is'desired to .reinove the layer extending along one edge of tl of. plaster v2 ie table, auch.

layer ol" plaster being ordinarily about il inches wide and one-quarter of an inch thick.

Extending through the table series of pegsV 8, 8, 3, etc., lsuch top are the pegs when in use projecting about one-quarter of an inch above the surface of the table, and when not in use being pressed down so that their upper ends are flush with the top lof the table..

ln order to break up this layer of plaster' and push the pegs down. the wheelsor rollers l and 5 are provided carried k up wor-l@ 6 heneatl'i Which-the te en the trame up by against rotation by the lock nuts 31, 31.

direction indicated by the-arrow Iso that the `wheel e acts as the leader, fraeturing the layer of plaster and pressing down the pegs e, e, s, etc.,

after which the roller 5 passes over the fractured inatcrial'and still further pulverizes and loosens it.`

T he framework 6 is preferably in theforin track upon yof-an -beain extending transversely ofthe which the tables are mounted and being secured rigidly in position upon ythefran'iework ofthe. structure in which the surfacing operation is conducted. Thisv beam 6 has 7, 7 through bolted to itsV sides thev brackets which extend the bolts 8, 8 for adjusting the vpressuie exerted by the wheels on the plaster.r This pressure is 'preferably exerted yieldingly through the springs 9, 9, which encircle the bolts 8, The wheels or rolls l and 5 arey inoi'inted upon the axles 10,10 carried by the four bars 11,A 11 and 12,12, such bars being pivoted at their inner ends to the bolt/13. ,'18 supported'upon a U-shapedbracket 14 his bolt secured to tlieA web ofthe I-beain 6 by means of the bolts 15.

12, 12 are secured together by" 11, 11.y and iiiean's ofthe 18 and 19 b bars 11, 11 a he outer ends of the bars 'bolts 16 and 17, suitable spacers eing provided intermediate the nd 12, 12. T hesprings 9, Q'rest at their lower ends'upon the blocks 20, 20

y supportedfroin .the bars 11 and 124by means of the stud bolts 21, 21 extending 'through such side Vvbars and into the blocks. 1

Carried by the brackets 7, 7 are the swivelblocks 22, 22 having threaded trunnions at their sides extending through the walls of the brackets and provided with. the nuts 23,'

23.A Threaded upon the bolts 8, 8 and extending thro ugh the swivel blocks 22, 22, are

the' sleeves24, 244; provided at their upper ends With the clamping nuts 25, 25. Surrounding th e -upper portions of the sleeves 24, 24 and keyedthereto are the collars 26, 26 having integral therewith the handles 27,

springs 9, 9V

rotating the 427. Bearing upon. the upper ends of the are the washers 29, 29 backed the nuts 30, 80,' such nuts being held By sleeves 24 from the handles 27,

the bolts 8, 8 inay be adjusted up and down,

fthusadjusting the tension of the springs 9,

9 so as to ,secure the desired ainount of presysure by the .plaster on, t

3,3, etc

Wheels 4, 5 upon the layei'. he table and upon tbe eins 3,

In order to reduce the amount of force required to crush the plaster', sprays of water are preferably applied to the plaster in advance oit' the wheel t and the wheels are freed from any plaster which may cling thereto and interfere with their crushing action by means of the serapers 28, 28, extending transversely of the bars 1l, ll and 12, 12 and bolted thereto.

In operation, the table moves beneath the pair of wheels i and 5 in the direction indicated by the arrow, the wheel l iirst engaging the plaster which is readily fractured by reason of its beveled face, the pegs 3, 3,

3 being pushed down one after the other as they are engaged by the wheel. rlhe water suppliedto seiten the layer ot plaster also serves to wash away this loosened materia and any plaster still lett on the edge of the table is further crushed and loosened when it passes beneath the dat ifacei'l wheel 5, the device thus serving to clean oil' the plaster and push down the pegs as the table is moved slowly trom the position at which it is stripped of glass to a new po.. i ion of use where another sheet is siiipplied to the top oit the table and secured in position by means oi the pegs 3, 3, 3 and a suitable layer of plaster along each edge of the table.

Wvhat l claim is:

l. Apparatus for cleaning plaster Jfrom the edge out a moving surfacing table having a row of glass holding pegs projecting above the top of the table and through the plaster, comprising a device having a roller positioned so as to engage the plaster and pegsy as the table moves beneath the device and means pressing said dev-ice downwardly with suiicient torce to fracture t-he plaster and drive the pegs downward.

2. Apparatus `for cleaning plaster from Apparatus for cleaning plaster from the edge ot a moving surfacing ta le having a row of glass holding pegs proiecting above the to a of the table and through the )laster e v l a comprising a device having a series oit rollers positioned. so as to engage the plasterV and pegs as the table is moved under t-he device and means pressing said device downwardly with suiipicient force to fracture the plaster and drive the pegs downward, the {irst of the series oit rollers having its flange or tread beveled on each side so that itis wedge shaped in cross section.

4,. Apparatus for lcleaning plaster from the edge oi? a moving surfacing table vhaving' a the top'oil the table and through the plaster, comprising a device having a series of rollers positioned so as to engage the plaster and pegs as the table is moved under the device and means pressing said device downwardly with sufhcient force to fracture the plaster and drive the pegs downward, the rst of the series of rollers having its flange or tread beveled on each sioeso that it is wedge shaped in cross section, and the next of said rollers having a flat flange or tread. In testimony whereof, l have hereunto subscribed my name this 3rd day of Oct., 1927.

i JAlliES GREEN.

row ot holding pegs projecting above 

